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  : Trillion Shape 15x15 mm Gems
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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (5): Trillion Shape 15x15 mm Gems Clear All
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ID: 4276331 pcs
15.75ct Kunzite
15.53mm x 15.41mm x 10.91mm
USD 315.00
Item in Stock
ID: 4088231 pcs
10.08ct Bloodstone
14.78mm x 14.63mm x 8.39mm
USD 35.28
Item in Stock
ID: 4088511 pcs
10.17ct Bloodstone
15.29mm x 15.28mm x 8.31mm
USD 35.60
Item in Stock
ID: 2203901 pcs
14.70ct Sphalerite
14.66mm x 14.57mm x 9.60mm
USD 797.86
Item in Stock
ID: 4084091 pcs
9.28ct Bloodstone
14.59mm x 14.48mm x 8.86mm
USD 32.48
Item in Stock
Trillion Shape 15x15 mm Gems
Some people by gems by color or prize, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Trillion shapes, facet cut and cabochon gems available now in 15 mm x 15 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect. As a general guideline, when it comes to 'calibrated' gems, they are not meant nor expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often around 0.3 mm or slightly higher even. This small variance can usually be accommodated for standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart